<?php

if($_FILES["file"]["error"] > 0){
    echo "Error:".$_FILES["file"]["error"]."<br>";
} else {
    echo "Upload:" . $_FILES["file"]["name"] . "<br>";
    echo "Type:" . $_FILES["file"]["type"] . "<br>";
    echo "Size:" . ($_FILES["file"]["size"] / 1024) . "KB<br>";
    echo "Store in:" . $_FILES["file"]["tmp_name"]."<br>";
}

if(file_exists("upload/".$_FILES["file"]["name"])){
    echo $_FILES["file"]["name"]."已经存在！";
}
else {
    move_uploaded_file($_FILES["file"]["tmp_name"],"upload/".$_FILES["file"]["name"]);
    echo "已将".$_FILES["file"]["name"]."存储在了upload/".$_FILES["file"]["name"];
}

?>